Carriage-shifting means eos



E. E. PHINNEY.

CARRIAGE SHIFTING MEANS FOR CALCULATING MACHINES.

APPLICATION FILED MAR- 811-917.

1,330,652. Patented Feb. 10,1920,

UNITED sra'rns PATENT orrion EDGAR E. PHINNEY, 0F NEVJ YORK, N. Y.,ASSIGNOR TO MONRUE CALCULATING MACHINE COMPANY, OF NEW YORK, N. Y., ACORPORATION OF NEW YORK.

CARRIAGE-SHIFTING MEANS FOR CALCULATIN(r-MACHINES.

Application filed March 8, 191?.

To all whom it may concern:

Be it known that I, EDGAR E. PHINNEY, a citizen of the United States,residing at New York, in the county of New York and State of New York,have made a certain new and useful Invention in CarriageShifting Meansfor Calculating-Machines, of which the following is a specification.

Figure 1 is a side view with parts broken away, showing the carriage inlowered pose tion.

Fig. 2 is a section on the line 22, Fig. 1.

Fig. 3 is a view similar to Fig. 1, showing the carriage lifted.

Fig. 4 is a view similar to Fig. 2 showing the parts in the positionsshown in Fig. 3.

The invention has relation to calculating machines having a pivotedcarriage, and particularly to improved key-operated means for shiftingthe carriage end-wise or trans-- versely of the machine.

Theinvention consists in the novel construction and combinations ofparts, as hereinafter set forth.

In the accompanying drawings, illustrat ing the invention, the numeral 2designates the casing of the machine, 4 the carriage and 5 the numeralwheels or dials of the c rriage upon which is registered thecalculation, said wheels having each an attached gear wheel 5, normallyin engagement with underlying gear wheels 11 of the casing, suitabledifferential actuating or selecting mechanism and carrying mechanismbeing designed for engagement with the wheels 11, as shown in myco-pending application for patent Serial Number 142,190.

The carriage 4. is pivoted upon bearings 79 of the casing, and isprovided with means whereby it may be shifted endwise upon saidbearings, step by step, to disengage the wheels 5' from the wheels 11and to reengage said wheels 5 with others of the wheels 11, for thepurpose, mainly, of facilitating the registration of the results in theperformance of problems in multiplication and subtraction. During thefirst half of the shifting movement the carriage is raised pivotally, toclear the dial Wheels 5 from the underlying wheels 11, and during thelast half of such movement is lowered, to secure the reengagement ofthe'gears.

\ This means consists of a rotatable rod or shaft 80, mounted in asleeve 81 of the eas- Specification of Letters Patent.

Serial Ne. 153,367

ing and hearing at its rear end a double crank arm 82, havingdiametrically opposite crank members, each member having at its outerend a pin 83, designed to engage any one of a series of open-bottomnotches Si of the carriage frame. The shaft 80 has at its forward endkey-operated means for rotating the same, consisting preferably of amutilated gear wheel 85, loosely mounted thereon and carrying a pivotedspringpressed pawl 86, said pawl engaging a ratchet wheel 87, fast uponsaid shaft; a depressible key 88 having a stem 89 provided with rackteeth or notches 90 engaging said gear wheel and turning the same in thedepression of the key. The. key stem has sliding engagement within aperforation 91 of the top plate of the casing and a perforation 92 of asmall horizontal plate 93, spaced apart from said top plate and upheldby a post 9 1- of horizontal frame plate 95, a screw 96 serving tosecure the plate 93 to said post and having a washer 96.

The crank arm 82 is normally horizontal, and in the depression of thekey to raise the carriage will be thrown a little past verticalposition, the carriage in its fall carrying the crank arm therewith andcausing said arm to complete a half turn, the pawl 86 then engaging thediametrically opposite tooth or shoulder of the ratchet wheel andholding the shaft 80 against backward movement. The key is depressedsufliciently to cause a throw of the gear wheel a little more thanone-quarter around, for the purpose stated, and said gear wheel and thekey are returned to normal position by a coiled spring 97 surroundingthe sleeve 81, one end of the spring being fixed to the gear wheel andthe other to an upright plate 98 of the casing, by which said sleeve iscarried. The return movement of the mutilated gear and of the key islimited by engagement of a stop projection 99 of said gear with thewasher 96.

Another and similar shaft 80 is provided adjacent to the shaft 80, andis provided with duplicate key-operated means for rotating the same in adirection opposite to that in which the shaft 80 is rotated, toaccomplish the shifting of the carriage to the left, the first describedmeans being for the purpose of shifting the carriage to the right. Thisduplicate key-operated means has the same reference numerals appliedthereto as those applied to the first described means, butdifferentiated by the exponent l,

The carriage in its fall, during the last half of the shifting movement,will come to rest upon the pins of the oppositely extending crank arms.

I claim:

1. In a calculating machine, a casing having a series of gear wheels, anendwise shiftable pivoted carriage having a series of wheels engagingsaid gear wheels, and means for raising the carriage pivotally andshifting it endwise including a depressible key, a rotatable shaft, andmeans for rotating said shaft including an intermittent clutch, onemember of which is fast to said shaft and rotatable therewith in thefall of the carriage and the other member of which is operable by thekey, and means for returning said other member and the key to normalposition.

2; In a calculating machine, a series of gear wheels, an endwiseshiftable pivoted carriage having a series of gear wheels engaging thefirst named wheels, and means for raising the carriage pivotally pastthe vertical center of its throw to shift it endwise and including adepressible key, a rotatable element operated thereby and means forrotating said element. upon actuation of the key including anintermittently acting clutch, one member of which is fast to saidelement and rotatable therewith in the fall of the carriage and theother member of which is operable by the key, and means for returningsaid other member and the key to normal position.

3. In a calculating machine, a series of gear wheels, an endwiseshiftable pivoted carriage having a series ofgear wheels. engaging thefirst'named wheels, a depressible key, and means operated by said keyfor automatic fall of. the carriage to complete its throw through forceof gravity.

4;. In a calculating machine, a series of gear wheels, 'an endwiseshiftable pivoted carriage having a series of gear wheels engaging thefirst named wheels, and. keyoperated means for raising the carriagepivotally past the vertical'center of its endwise throw, said meansadapted to admit ofv the release of the key when. the carriage is raisedas stated andto admit of. the automatic fall of the carriage andincluding an. intermittently acting clutch, one member of which relatesto the key and the other member of which relates to the carriage, andmeans for returning the key and its related clutch member to normalposition.

5. In a calculating machine, a casing having a series of gear wheels, anendwise shiftable pivoted carriage having a series of registering wheelsengaging said gear wheels, and key-operated means for raising thecarriage upon its pivot and shiftingit endwise, including a rotatableshaft having a ratchet wheel, a gear wheel loosely mounted upon saidshaft and carrying a pawl engaging said ratchet wheel, a key stem havinga rack engaging said gear wheel, and spring means for returning said:

gear wheel and said key stem to normal position.

In testimony whereof I affi my signature, in presence of'two witnesses.

EDGAR, E. PH-INNEY.

Witnesses L. D. TAGGART,- P. F. HARNETT.

